Senior HR Business Partner – Growth & Transformation (m/f/d)

As a Senior Principal HR Business Partner (m/f/d) , you act as a strategic advisor and trusted sparring partner to senior leaders across our global R&D organization. Your focus is on enabling sustainable growth, organizational scalability, and business transformation in a highly dynamic technology environment. You help shape the future organization by aligning people strategy with business objectives, ensuring that leadership teams are equipped to navigate rapid expansion, organizational complexity, and integration challenges. The position explicitly focuses on strategic business partnership rather than operational HR activities. What is your Day to Day Mission: Act as the strategic People Partner for senior R&D and Technology leaders, advising on organizational strategy, leadership effectiveness, workforce planning, and long-term business growth. Shape and scale a high-performing global R&D organization by designing structures, operating models, leadership layers, and talent strategies that support rapid growth and increasing organizational complexity. Lead the people-related aspects of mergers, acquisitions, and organizational integrations, ensuring successful onboarding of acquired teams, leadership alignment, cultural integration, and talent retention. Partner with executive stakeholders to anticipate future capability requirements and develop workforce strategies that secure critical engineering and technology talent. Drive organizational transformation initiatives, helping leaders navigate change, organizational redesign, restructuring, and evolving business priorities in a fast-growing technology environment. Challenge and influence leadership teams through data-driven insights and strategic advisory, enabling informed decisions on organizational effectiveness, succession, and capability development. Build scalable leadership and talent frameworks that support innovation, performance, and sustainable growth across highly specialized R&D functions. Ensure people strategy is directly aligned with business strategy, transforming organizational goals into long-term initiatives that accelerate company growth and competitive advantage. Serve as a trusted advisor during periods of significant expansion, supporting the integration of new business units, international growth, and increasing organizational maturity. Continuously assess organizational health, identifying opportunities to enhance collaboration, agility, innovation, and execution across the technology and R&D landscape. What you bring to the team: 10+ years of experience in senior HR Business Partner, Organizational Development, Transformation, or People Strategy roles within high-growth technology environments. Proven track record supporting executive leadership teams in Engineering, Software, Aerospace, Robotics, Defense, Deep Tech, Semiconductor, or comparable R&D-heavy industries. Significant experience supporting rapid organizational scaling, international growth, and complex transformation programs. Demonstrated success leading the people side of mergers, acquisitions, and post-merger integration activities. Strong background in organizational design, workforce planning, leadership effectiveness, succession planning, and strategic talent management. Ability to influence senior executives and challenge decision-making through a highly consultative and data-driven approach. Deep understanding of how world-class R&D organizations operate and evolve through different phases of growth and maturity. Exceptional stakeholder management skills, with the credibility to engage leadership teams at Executive and Board level. Fluent in German and English. Why Quantum-Systems: We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus. We are industry pioneers who are ambitious, bold, and visionary. We push limits, think outside-the-box and strive for technologi